Compressor mounting for automotive vehicles



Feb. 18, 1930. H. D, CHURCH ,7 7 0 I COMPRESSOR MOUNTING FOR AUTOMOTIVEVEHICLES Filed April 16, 1926 BY WZ/M Patented Feb. 18, 1930 HAROLD 1).onuncmor CLEVELAND HEIGHTS, OHIO, Assienon TO THE WHITE MOTOR "COMPANY,or CLEVELAND, oriro, A CORPORATION or 01110 ooMPREssoR MOUNTING FOBAUTOMOTIVE VEHICLES Application filed April 16,

This invention relates to automotive engines and pertains toimprovements in the mounting of an air compressor thereon.

In air compressors of the type commonly- 5 employed in motor vehiclesequipped with air,

1 support the air compressor on the forward,

end of the engine, but when such an arrange ment is adopted, it is foundthat the vibra-V 'tions due to the periodicity of the compressor,

crank are transmitted to the engine timing gears causing undue wear andnoise.

-.,The object of the present improvement isto simplify the constructionof the driving con-- nections between the engine and the air compressorand to provide a driving mechanism,

W so supportedas to prevent the'periodicity of the compressor crank frombeing imparted to the engine gearing.

Anotherobject of the invention is to pro .7 vide a self-actingconnection between the communicating oil passages in the enginecrankshaft and the compressor crank in which connection fluidcommunication may be assured without loss of the lubricant.

Other objects of the invention and the featuresof novelty will beapparent from refer-T enceto the accompanying drawing of an embodimentof the invention, and in which description reference will be had to theaccom panying drawings illustrating such an emv bodiment.

Referring to the drawings; 7 J Figure 1 is a central vertical-sectiontaken through the'forward'portion of an internal combustion engine andan air compressor 40 showing so much of the compressor mounting as isnecessary for an understandingof the construction of the connection andtheIoperati'on of the oil fitting. v f

Figure 2 is a transverses-ectiontaken upon a plane indicated by thelines 22 in Figure 1. Referring now to all the figures of the drawingillustrating an embodiment of the o invention and man of which figureslike parts are designatedbylikereference charac- 59 ie s, the r fikcas.'10,;herein illu ed a m s ea ar s a is ths-sei resser- I 1926. SerialNo. 102,599.

formed with laterally depending flanges 11,

to which there is secured an oil pan 12, and a timing gear cover 13.

Within the crankcase 10, suitable bearing seats 14, are providedin'which there is journaled a crankshaft 15, provided with oil ducts 16,which communicate with conduits 17 and 18, leading from a main source ofpressure fed lubricant; The outer end of the crankshaft 15, extendsbeyond the bearing 14, and

upon this extension there is keyed a sprocket 19, adapted to drive thecamshaft in the usual manner. 1 I I An axial opening 20, is provided inthe end of the crankshaft and within this opening a flanged bushing 21,is secured by means of cap screws 22, which pass through the flangedportion of the bushing and are screw threadi ed-into the crankshaft 15.The axial alignment of the bushing 21, is assured with ring dowels 28,interposed between the abutting facesof the bushing 21, and the crankshafts Provision is further made to maintain the alignment of thebushing with the crankshaft by the pilot seat 24, formed on the innerend of the bushing flange which is engaged by an overhanging outerportion of :the gear sprocket 19.

The timing gear cover 13, isconstructed with an opening 25, which isaligned with the axis of the crankshaftand which accommodates the pilotbearing 26, formed in the air compressor housing 27. Within the aircompressor housing 27 ,a crank 28, is journalled being supported on ananti-friction bearing 29, at its forward end, and a wear bushing bearing30, in a rearwardly disposed boss 31, integrally formed with thecompressor housing 27 at the inner end thereof:

The compressor crank 28, is provided with a splined portion'32, whichextends beyond the inner bearingBO, and is engaged by key seats formedby'broaching the bushing 21.

' Within the opening 20, a snugly fitting plunger or, piston 33, isinterposed between the outer end of the compressor crank and the bottomof the opening 20. The forward face -of thepiston 33, is provided with afrustraconical boss 34 which is adapted to engage crank 28, and acompression spring 86, intermediate thebottorn of the opening 20, andthe rear inner wall of the piston 33, maintains a 1 fluid tightconnection. between the boss .34,

and the seat 35. An orifice 37, in the boss 3d,

is provided to maintain fluidlcommunication between the enginelubricating system and the 0.11 passages 38,1n the'compressor-crank,

Assuining'that lubricant :is continuously supplied'throughfthe oil ducts16, into the opening 20, it will be seen that the fluid tight piston 33,will prevent thelubricant from es-- the lubricant-passages of saidsh'afts,-carried passage'88, of the crank 28, as maybe pre determined bythe size of the opening 37, in o I the piston 33,,and" by virtue of "thespring co-aeting seat 35, loss of Y prevented at this point,

caping through the splined connection between'the' bushing 21 and crank28. It will also be seen'that the orifice37, willipermit suchvolume oflubricant-to flowintothe oil pressed contact between the boss 34, andthe e In'thearr'angementof the air compressor,

in the embodiment illustrated, it will beseen that there will be adiminution of the vibra eons transmitted from the an compressorjto'xth-e 'engineas'the compressor crank is supported within the enginecrankshaft-adjacent one of 'i-ts nain bearings, which'bearing thevibrations of the reciprocating parts of is of suitable size andrigidity-to withstand the air compressor and toresist the periodicvibrations of the compressor crank.

' Having thus described my invent on, what 'I claim and desire to secureby Letters Patent is I 1, The combination with a axi ally alignedtelescopically: arranged shafts coupied together-for simultaneousrotation and provided with lubricant passages, of means, providedwith alubricant passage connecting '.by one of said shafts in substantiallyfluid V 2. The combination tight engagement therewith and resilientlypressed into fluid tight engagement with the other of said shafts.

communicatio'n with said lubricant passage,

' an air compressor crankshaft provided with a lubricant passage andt'elescopically arranged w-i-thin said engine crankshaft,

' a source of lubricant under pressure, a spring driving meansintermediate said engine cr'anl'sshaft and saidy compressor crankshaft,

pressed piston withinsaid engine crankshaft opening adapted torestrictively communi cate lubricant under pressure from the said enginecrankshaft passage-to the said com pressor' crankshaftpa ssage.

The j'comh'na tioniw th an englne crank shafthaving aflubr'icant passagetherein and an: axial opening in onefend thereof in fluidcommunication-3 with saidi iluhricant passage,-

lubricant will be r p with an engine crankshaft havingalubricantpassage-therein and an axial opening in one end thereof influld in,ia compressor* crankshaftf of an air compressor crankshaftprovided with a lubricant passage and telescopically arranged withinsaid engine crankshaft, driving means intermediate said engine'crank- Ishaft and said compressor, crankshaft, a source of lubricantunderpressiire, a spring pressed piston within said engine crankshaft openinghaving a conical apertured boss on the outer face thereof and -co-acting' with; a

= of "an air compressor crankshaft provided with a lubricant passage andj telescopically arranged within said'engine crankshaft,driving a meansintermediate said engine erank-' shaft and said compressor crankshaft,"a-

source of lubricant under pressure, 'apiston telescopically joined'f toone of the crankshafts and having an axial orifice through its end wall,said piston'pjressed into Gagaee "ment with the other icrankshaft, saidothercrankshaft presenting, an "axial' ori fice to the first namedorifice.

1 '5, The combination shaft having a lubricant passage therein and anaxial opening 'in'one end thereof in fluid with an engine crankr of anair compressor crankshaft provided" shaft and'sa'id compressorcrankshaft, a source of lubrlcant under pressure ,a pistontelescopically joined-to oneof thesaid crankshafts and pressefd'againstthe" other crankshaft, said-piston having an apertured end wallcoractin-g witha complementary seat in said other crankshaft;

I a 6. The combination with two axially aligned {shafts coupled togetherfor-- si-inul I taneous rotation 5 and provided with lubricant passages,of asp ring pressed plunger carriedf by one of'saidshaft-shavingfsuhstantially fluid tight engagement wi th 'thef other ofi said shaftsuand provided aIlubri-cant passage connecting thelubricantpassagesiof said shafts.

' with alubricant passage-and telescopically arranged within said enginecrankshaft, driving means-intermediate said-engine; crank 7.:Thecohination "wait an axially aligned shafts coupledto'getherforfjsin1nltaneous'rot-ation and provided-W h labricant passages, ofgaspring pressed "plunger carried by one-of said-shaftshavimg telescopic'substantially 'flui-dai glrt'engagement V l with the-other ofsaid shaftsan d provided bricantpassages of said, shafts-.

oneend andhaving-alnbrican pas 1 end and v havinga luhriic'an 8-, Acrankshaft 5 extended and at" V with a lubricant passage connectfingithe1 j V i I I I n communicatlon with said: lubricant passage, 7

the said recess, a bushing operatively connecting the two shafts forsimultaneous rota; tion thereof, and a member having sliding engagementwith one ofthe shafts and aligning engagement with the other shaft andhaving a passage therethrough communicating with the lubricant passagesin the shafts.

In testimony whereof I hereunto affix my signature this 8th day ofApril, 1926.

HAROLD D. CHURCH.

